Agatha All Along Finale Explained: Why Death Called Billy an Abomination and What It Set Up for Wiccan and Agatha

The two part finale of Agatha All Along revealed that Agatha Harkness never sacrificed her son. Death simply gave her more time with him, and a separate deal struck over Billy goes a long way toward explaining Agatha's return as a ghost. When the finale aired in October 2024, I went through episodes 8 and 9 in full, including the Easter eggs, the reasoning behind Death's choices, and where the story left Wiccan and Agatha in the MCU.

Alice's death flips the floor and foreshadows Agatha's whole story

Episode 8 picks up right where the last one left off, with Alice just after she had been killed, so we see the other side, pun totally intended. I really like how they invert the floor. At the end of the previous episode we saw Lilia flipping the tower, and now we see Alice on the floor flipping over as if she is entering the underworld. It is an onscreen portrayal of what happens after you die and Death comes to claim you.

There is a really important piece of dialogue here that foreshadows the rest of the series. Alice wishes for more time, and we find out that more time is exactly what Death granted Agatha when it was her son's time to die, basically in childbirth. There were plenty of wild theories about Agatha sacrificing her own son to Mephisto for power, but it turns out it was simply his time. Death, Agatha's lover, tells her she cannot let him live but can give her some more time.

That is what Death means when she says she gave Agatha more than anybody in history, and why Agatha shoots back: you call that giving, all you did was take. Death is saying she gave Agatha more time with her son than she has given anybody else. Agatha does not care, because in the end Death still took her son.

Death's deal over Billy goes a long way toward explaining Agatha's return as a ghost

This conversation leads Death to call Billy an abomination. That is because he did not die in the way the balance requires. Instead of dying and going with Death, he died and was reincarnated. Death wants to set that balance right by taking Billy, but she also knows he would simply reincarnate again through the power of his brother.

So she makes a deal with Agatha. If Agatha delivers Billy, she gets to stave off death for a long time and, when she finally dies, she will not see Death's face. That goes a long way toward explaining why Agatha was able to come back as a ghost instead of, presumably, following Death into the afterlife.

One more key detail in this exchange: Death almost lets it slip that the Witch's Road does not actually exist. We later get confirmation that the road was a ruse, a lie Agatha used to lure witches in so she could steal their power. The version the coven walked was built entirely from images in Billy's room, which we see when he realizes he is the one who created it.

The road ends in Agatha's basement because this story is a cycle

Interestingly, not only does the Witch's Road go in a full circle, it ends in Agatha's basement, which is where all of this started. As I discussed after the previous episode, Death being the Green Witch means her path is really about death, life and rebirth as part of a cycle. Now we are right back where we started, and that is an allegory for Billy dying and being reincarnated, and for what soon happens with Tommy.

We also learn in a couple of lines of dialogue that it was actually Agatha who bound Jennifer. Jennifer unbinds herself and lets go of Wiccan's hex. What Wiccan truly wants, though, is his brother. Agatha, knowing the deal she made with Death and that this could end the trial for both of them, helps him reincarnate Tommy.

I really like that in the middle of all this, Billy stops to ask whether he is killing this kid just so his brother can live. He is obsessed with the morality of it, and this draws a clear line between who Agatha has been and the kind of sorcerer and witch Billy wants to be.

"Sometimes little boys just die" makes death something no one can avoid

That dialogue works in two ways. First, it explains Wiccan's moral crisis later, when he realizes the hex he created, the so called Witch's Road, might be, and is, responsible for killing some of the witches who died on it. Second, it gives Agatha the line "sometimes little boys just die", meaning it was her son's time. She did not sacrifice him, and Death was not being malicious in taking him.

I think the scene is establishing that certain deaths, or death in general, cannot be avoided. It is a canon event, like the death of Spider parents in Across the Spider-Verse, or the What If episode where Doctor Strange could not save Christine Palmer no matter what he did. Death has to happen as part of the balance between life and death, which is why Death calls Billy's reincarnation an abomination and wants to even it out by taking his twin.

That idea of balance is the tie to what Thanos was going to do in the comics, and it is the main purpose behind Galactus eating planets in the MCU. Ultimately, I think the message is that no matter what you do, you cannot avoid death. That is why Death tells Agatha she can give her time but not life. The show has said it twice that I can remember: death comes for us all.

Wiccan's full form cannot beat Death, so Agatha sacrifices herself

That ties into the reveal of Wiccan's full form. Now that he has actually embraced his power and is operating on a Wiccan level, which is awesome, Agatha turns to him and calls it feeble. Death is a cosmic entity, and they cannot beat her even with their powers combined. More than that, you simply cannot defeat death; it comes for you regardless.

That is why, at the end of the episode, they bargain over which of them will go with her, because they know she is not leaving without at least one of them. It is ultimately Agatha who decides to sacrifice herself to save Billy. He reaches out through telepathy and is now inside her thoughts, something he could not do before, as referenced in WandaVision and in one of the recent episodes.

Whether it was that moment or the deal she made about not seeing Death at the very end, Agatha is able to come back as a ghost and haunt Billy. The big twist at the end of the episode, though, is Billy realizing he created the hex in the first place, as he sees all the imagery around his bedroom.

The finale skipped big cameos and set Agatha and Billy on the hunt for Tommy

I really liked the finale because, as I predicted the day before it aired, there was no big cameo from Wanda or Mephisto. Instead it set up these two characters for their future in the MCU, and it truly did that. It opens with a poignant flashback showing what actually happened with Agatha and her son. It was simply his time, and if anything she got more time with him than Death would have given anyone else. Still, that is what caused the lovers' quarrel, why Agatha hates Death, and why they ended up where they are.

Agatha then shows up at Billy's house because she wants her brooch back. He tries to banish her, but she figures out how to actually touch things in the real world by grabbing her brooch, saying she is a quick study. After Billy memorializes the rest of their coven, the two of them set out to find Tommy, another step toward setting up the Young Avengers.

Agatha as Billy's ghostly guide, and my verdict

Agatha sticking around as a ghost is kind of funny, because in the comics she was a nanny to Franklin Richards, and that could still happen. More likely, as I saw it then, she takes on that role at Billy's side. He is a young witch without much experience but with tremendous power, so she would be invaluable for advice and for figuring things out with him along the way, a resource he can lean on, sort of like a nanny. At the time, I expected that to play into the Young Avengers once Billy joined Kate Bishop, Ms. Marvel, what I assumed would be Hulkling, and Kid Nova if he got rolled into the team.

As for the show itself, "I thought it was one of the better Disney Plus shows right up there alongside Loki". Maybe it is not as great as X-Men '97, but that might have something to do with how much we love that IP.

Where would you rank Agatha All Along against Loki and X-Men '97, and which Easter eggs or details from the finale did I not mention?